Need to solder a 4x4mm QFN by hand - All About Circuits
Feb 1, 2022 · Need to solder a 4x4mm QFN by hand cmartinez Feb 1, 2022 Search Forums New Posts 1 2 Next
How to measure continuity of a single QFN without powering entire …
Nov 27, 2020 · Are there Devices/Probes/Things that can measure single QFN operations, and without powering all SMDs on board? It depends on the board design. Few are designed to allow testing …
QFN 16 layout question - All About Circuits
Feb 24, 2023 · Hello, I am making a PCB with a QFN-16 pads, I am having issue with heat so I modified the PCB so I can add a heat sink and fan. I created a small hole on the PCB in the center of the QFN …
QFN programming - All About Circuits
Dec 16, 2008 · What socket should I use for the 44-pin QFN chip? Are there specific things I need to look for when shopping for this? So the thing I showed you on eBay will allow programming of it? I …
QFN vs QFP - All About Circuits
Jun 18, 2025 · Hi everyone, Is there a significant advantage of using QFN over QFP or QFP over QFN? Does that have to do with the chip area or parasitic effects between the pins? Thank you!
PCB Pad Design for QFN and MLP(Q) Packages - All About Circuits
Oct 2, 2016 · I am now at the point with my lightning detector(s) to design my own board. The requisite chip (AS3935) is an MLPQ, which is very similar to the QFN with a central heatsink and ground plane …
How to solder fine pitch QFN parts? - All About Circuits
Sep 23, 2018 · Looking for reliable way to solder small (5mm) QFN parts on densely populated boards. Can this be done with manual tools and without optical alignment system? I am looking at a high end …
What is ATmega328P U-TH? - All About Circuits
Oct 23, 2022 · Hi everyone, I purchased ATmega328P-MU from a certain site, then I received ATmega328P U-TH. The MU is a 5x5mm trapezoidal VQFN package, but my U-TH appears to be a …
Cleaning Question - White residue after cleaning... - All About Circuits
Apr 8, 2011 · i have noticed after cleaning boards w/ 91% ISP that there is a white residue on the components and slight haze on the board. my process is to clean the board before hand w/ 91% ISP, …
how do you probe tiny pins? - All About Circuits
May 26, 2022 · Whoops. Missed the QFN bit. I've usually been able to probe the solder blob at the edge or add a little extra solder for a blob. You do need good magnification with a proper solder system for …